AirHint found the following cheapest return flights from Boston (BOS) to Zurich (ZRH) in December 2025 (see full year).

Return flights

03 Dec - 10 Dec	United	direct
13 Dec - 20 Dec	Icelandair
14 Dec - 21 Dec	TAP
08 Dec - 15 Dec	United	direct
23 Dec - 30 Dec	United
25 Dec - 08 Jan	Icelandair
13 Dec - 20 Dec	United	direct
14 Dec - 21 Dec	SWISS	direct
14 Dec - 20 Dec	Scandinavian Airlines
28 Dec - 04 Jan	Austrian Airlines
20 Dec - 30 Dec	TAP
28 Dec - 04 Jan	SWISS	direct
22 Dec - 05 Jan	Icelandair
25 Dec - 08 Jan	SWISS	direct
18 Dec - 25 Dec	United
18 Dec - 05 Jan	TAP
25 Dec - 01 Jan	SWISS	direct
22 Dec - 05 Jan	SWISS	direct
18 Dec - 05 Jan	SWISS	direct

Also check the deals for one-way flights from Boston to Zurich in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Boston to Zurich in December from 467€

Return flights